Cremation-furnace.



G. C. ADAMS.

CREMATION FURNACE.

APPLICATION FILED APR. I7, 1916.

. 1 $12 8507, Patented 'Jan. 16,1917.

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oasis GEORGE C. ADAMS, OF SAN FRANCISCO, CALIFORNIA.

CREMATION-FURNACE.

Application filed April 17, 1916.

To all whom it may concern:

Be it known that I, GEORGE C. ADAMS, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Cremation- Furnaces, of which the following is a specification.

The present invention relates to improve ments in cremation furnaces. I

One of the objects of the invention is to provide a furnace so constructed that fluid fuels can be burned therein without noise and vibration.

A further object is to effect perfect combustion of the material in the furnace and to prevent unconsumed material escaping therefrom in the form of smoke.

A further object is to provide means whereby the gaseous products of combustion of the furnace can safely, and without ob- 'jectionable result, be discharged into the sewer.

A further object is to provide means for easily removing the ashes from the furnace.

A further object is to conserve the heat generated by the combustion of the fluid fuel.

A further object is to prevent the fire box or furnace pit from becoming overheated.

In the accompanying drawing, Figure 1 is a vertical transverse section of my improved cremation furnace; Fig. 2 is a horizontal section on the line 2-2 of Fig. 1; Fig. 3 is a broken side view thereof; Fig. 4c is a vertical section of a door.

Referring to the drawing, 1, 2 indicate the side walls and 3, 1 the end walls of a furnace. Said side walls are connected at the top by an arch 5 and are strengthened by means of stay plates 6 held together by bolts 7. The end wall 3 has an opening therethrough which is closed by a removable door 8.

9 indicates a fire box or furnace pit between the thickened lower portions of the side walls, the sides of which pit have upward extensions 10, of about six inches in height, into the casket chamber 11 between the narrow upper portions of the side walls, so that the casket can rest upon a number of transverse bars 12 resting upon the tops of said extensions. The provision of bars at the top of a deep pit is of importance. By this construction the casket can fall to Specification of Letters Patent.

Patented J an. 16, 191?.

Serial No. 91,763.

the bottom of the deep pit at a comparatively early stage in the cremation. When it has so fallen the combustion is confined to the pit, and the upper parts of the furnace are not excessively heated. This not only effects a saving in heat, but also permits of a fresh casket being placed in position more quickly, because the upper part of the furnace is not so hot as it would otherwise have been. Another important result of supporting the casket upon the bars at the top of the pit is that the casket is thereby raised above the sides of the pit about an inch, and the effect is to spread the flames to the sides of the casket, sothat the flames entirely envelop the casket, and the casket is quickly consumed and falls to the bottom of the pit. Said extensions are thus extended longitudinally past the ends of the fire box or furnace pit 9, as shown at 13. Extending through the lower portion of the side wall 1 is a horizontal hole 14 through which extends a burner 15 for burning fluid fuel, said burner, when in use, extending into the fire box or furnace pit 9. Said burner is formed at the inner end With a downwardly directed tip so that the flames are discharged downward into said fire box or furnace pit, being deflected from its bottom and rising upward and enveloping the casket, the products of combustion escaping by a flue 16 in the side 2 of the furnace opposite to said burner. By this construction the flames are first directed downward and then reflected from the bottom and travel upward, so that the streams of incandescent gases move in opposite directions and impinge against one another and pre vent the roaring or vibrating effect which would otherwise be produced by said gases. For supplying air for further combustion of the fluid fuel I provide long and narrow air conduits 17 at the sides, controlled by doors 18 and leading to the bottom of the fire box. I also provide long and narrow air flues 20 at the terminal portions of the sides which lead upwardly and discharge into the casket chamber near the ends of the extensions 13. I also provide long, narrow flues 19, 21, controlled by suitable doors and leading to opposite sides of the furnace pit, and discharging into the casket chamber 11 on the outer sides of the extensions 10 and 13. These auxiliary air conduits supply air for perfect combustion of the smoke or unconsumed material in the casket chamber, so that the gases which escape by the flue 16 contain no unconsumed material.

Making the air conduits or flues 17 20. 19, 21 long and narrow has the efiect of distributing the air where required, and also of heating it very thoroughly, since the w ole of it is inclose proximity with the brickwork. 'The air sup ply, being admitted below the casket, is preheated before being used for combustion and flows in the opposite direction to the flame proceeding from the burner so that a thorou h mixture of outer parts of the brick work from the in- ]negr, and permit the brick work to expand by eat. l

"Said flue 16 is formed in the side Wall 2 with ends which converge to each other, and the outer end of the flue connects with a conduit 22 which leads to a cooling chamber 23 in which are baflie plates 24: extending alternately from opposite vertical sides'of the box,leaving openings between the ends of said baflie plates and the opposite walls of the box, there being provided above said openings and. also over the outlet 26 of the box, Sprayers 27 for discharging water spray downward into the box, so that the products of combustion are compelled to pass two or more times through said'water sprays, becoming thereby cool. The products of combustion are drawn from the box and from the furnace into the box by means of a suction fan, not shown, and discharge into a sewer. The suction fan, being placed on the outer side of, the cooling box, receives the gases only after they have beencooled, and is therefore not injured by the heat.

Inorder to readily recover the residual ashes, and also the metal parts used in the casket, the bottom 28 of the furnace pit slopes downward from each side of the furnace pit to the center, and also from the middle of the furnace to the ends, and at the ends there are provided recesses 29 in which are placed meg tallic receptacles 31 so arranged that molten solder or other metal runs down the bottom of the furnace pit into said boxes. The boxes when cooled can readily be removed throughdoors 32 at the ends of the furnace.

Copies of this patent may be obtained for It is of advantage to have the furnace pit bottom slope downwardly from the center to the ends, as it causes the flames to spread more evenly along the bottom. If the bottom were level, the tendency would be to concentrate the heat at a particular point of the bottom.

By reason of the flames from the burner surrounding the casket on all sides, the casket and its contents are quickly and thoroughly destroyed by the fire.

I claim i 1. A cremation furnaceihaving .a casket chamber and supports fora casket therein, a

furnace pit below said supports, and a fluid fuel burner directed downwardly into saidfurnace pit, and a long, narrow air, conduit leading into said furnace pit below said burner.

'4. A cremation furnace having a casket chamber and supports for a casket therein, a furnace pit below said supports, a fuel burner directed downwardly into said furnace pit, a long, narrow air conduit leading to the bottom of said furnace pit and a long, narrow air conduit leading through the wall of said furnace pit and discharging. immediately beneath a casket supported upon said supports.

5. A cremation furnace having a casket chamber and supports for a casket therein, a furnace pit below said supports, a fuel burner directed downwardly'into said furnace pit, a long, narrow air conduit leading to the bottom of said furnace pit, an escape flue from one side of the casket chamber, and, a long, narrow air conduit leading through the wall of said furnace pit and discharging immediately beneath a casket supported upon said supports on the side of the casket chamber remote from said escape flue. v

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

GEORGE C. ADAMS.

Witnesses:

F. M. WRIGHT, V D. B. RICHARDS.

five cents each, by addressing the Commissioner otPatents, Washington, D. C. 

